Corner lock



Aug.. 27, 1929. 4 M. Fox 1,726,291

CORNER LOCK Filed Sept. 24, 1923 2 Sheets-Sheet l Aug.27, 1929. MFOX`1,726,291

CORNER LOCK Filed Sept. 24, 1923 2 Sheets-Sheet 2 Patented Aug. 27,19.29.

UNETED STATES PATENT oFFlcE.

MARTIN Fox, on CHICAGO, ILLINOIS?, AssIGNon To THE SENG COMPANY, orCHICAGO',

. ILLINoIs, A CORPORATION or ILLINOIS.

CORNER LOCK.

Application filed September 24, 1923.

This invention relates to a locking device for steel rails usedparticularly in connection with beds, `but may have a more general usewherever appliable. The principal object 5 of the invention is toprovide a new and improved construction, combination, and arrangement ofthe parts whereby an angle bar may be held either in the ordinary or theinverted position by use of the same fastening l device. Another objectof the invention is to malIe a receiving box or housing of a singlepiece of sheet material which is simple, strong, and inexpensive.

In the accompanying drawings, Fig. 1 is a front view of a corner lockconstructed in accordance with the principles of this invention showinga rail in one position; Fig. 2 is a similar View showing the rail ininverted p0- sition; Figs. 3 and L are side and top views of the cornerlock respectively; Fig. 5 is a section taken on the line 5 5 of Fig. 3';Fig. 6 is a perspective of the wedging or locking member; Figs. 7, 8 and9 are front, side, and top views respectively'of a modified form havinga different wedging` membergFig. 10 is a section taken on the line 10-10of Fig. 8; Fig. 11 illustrates a corner loclI with oppositely disposedwedging members; and Fig. 12 is a section taken on the line 12-12 ofFig. 11 further illustrating this modified form.

lin the wedging member type of`corner lock it is diiicult to provide asingle wedging member which will engage an angle bar rail both in thenormal and in the inverted position. To provide a wedging member forengaging such a rail in one position or the other it is relativelysimple, but to accommodate different widths of springs it is desirablethat the side rails can be inverted. The present invention accomplishesthis result in a very simple manner and provides means for preventingthe angle bar from becoming displaced and thereby improperly wedged inthe housing.

In carryin out this invention, afbox or housing 1 is ormed up out of asingle sheet of metal meant to form a rectangular housing 2, oneextremity of which has reduced tongues 3 inserted through perforationsin the other extremity, and the heads -t of these tongues are batteredor riveted to form a closed box. At the edges of these adjoiningextremities are perforated tabs 5 and 6 at right angles to each other towhich a cross connecting bar 7 is serial No. 664,339.

connected by bolts or rivets 8. Extending oppositely from the lower andupper sides of the box are attaching ears 9 and 10 through which boltsor screws 11 are inserted for fastening the corner lock to a post 12.

' One side of the box is formed with a perforated raised portion oroffset 13 through which a bolt 14C is inserted, and the opposite side ofthe box is provided with an opening 15 preferably rectangular in shapeto receive the corresponding end of a locking member 16. The lockingmember 16, as shown more clearly in Fig. 6, is also formed up out ofsheet materia-l and comprises similar wedging sides 17 and oppositeperforated ends 18. Un the edge of each side 17 are wedging surfaces 19and 20 spaced apart approximately the thickness of the box 2.v

This wedging member 16 is placed on the bolt 14 and inserted within thebox 2 where it is held in position by the rectangular opening 15.- Awasher 21 and a thumb screw 22 are then placed upon the threaded end ofthe bolt so that the wedging member may be drawn up tightly thereon andthe corner loclI is ready for use.

If an angle bar side rail 23 is inserted in the regular position, asshown by Fig. 1, one edge of the bar is engaged by the wedging edges 19of the member 16 and if the side rail 23 is inverted, as shown by Fig.2, the other edge of the side rail is engaged by other wedging surfaces20 of the locking member 16. In this form of the invention, an inwardlyturned wing 24 may be provided for holding the side rail 23 in itsordinary position, as shown in Fig. 7, but the wedging surfaces 19 willhold the side rail in upright position unless it its too loosely in thebox 2.

In the form of invention shown by Figs. 7 to 10 the box or housing 25 issimilar to that already described with the exception that there areopposite rectangular openings 26 and 27 for receiving a wedging memberk28 which can be driven in place against a side rail 23 in regular orinverted position. The smaller end of the wedging member 28 is formedwith a lip 29 which prevents it from becoming disengaged from the box25.

In the form of the invention shown by Figs. 11 and 12, a box or housing30 similar to that alreadyy described is formed with an odset portion 31with an opening 32 for seating a circular wedging member 33 adapted tobe va rectangular housing having opposite placed upon a bolt 14- Withits larger end against the head thereof. Another similar Wedging member33 is placed at the opposite end of the bolt and the tWo Wedging membersare separated by a spring 34: which tends to press them apart. At thebottom of the box 30 is an opening 35 in Which the lower Wedging memberfits loosely, and a Washer 2l and a Wing nut 22 are placed on thethreaded end of the bolt to draw the Wedging members 33 up tightly. Oneor the other of the Wedging members engages the corresponding edge of aside rail 28 placed in the boi; 3() in regular or inverted position.

In all of these constructions it is obvious that the side rail is heldtightly in the box and if it is loosened because of variation in size ofthe different parts, the side rail may be tightened in place.Furthermore the side rail Will be held securely either in regular or inthe inverted position.

I claim:

l. In a corner lock, a rectangular housing adapted to be attached to apost and with opposite perforations therein, Wer ging means including abolt and a member mounted in the perforations and the member beingmovable relatively to the housing.y the said Wedging member beingadapted to engage either one edge or the other of a plain angle barinserted inthe housing at one side thereof in normal or in invertedposition.

2. In a corner lock, the combination With pcrforations therein, of anunnotched angle bar side rail inserted in the housing in regular or ininverted position, and Wedging means including a bolt and a Wedgingmember operating in the perforations of the housing for engaging oneedge or the other of the sidey rail depending upon its position in thehous bolt and through the Wall of the housing,

and means at the end of the bolt for effecting the Wedging action of themember.

5. In a corner lock. a rectangular housing, a Wedging member movabletherein, said member comprising opposite sides each having spacedWedging surfaces, and means upon Which the member is mounted for movingit operatively through the Wall of and in the housing to effect aWedging action.

6. In a corner lock, a housing having perforations in opposite Walls, aWedging member movable in the housing and through one Wall thereofhaving opposite edges with Wedging surfaces thereon and perforated ends,a bolt extending through the perforated ends and mounted in the housing,and means on the bolt for effecting the .vedging movement of the memberthereon.

MARTIN FOX.

